The crossing number of the complement of a circuit. - Richard K. Guy; Anthony Hill (Discret. Math., 1973)

Triangular imbedding of Kn - K6. - Richard K. Guy; Gerhard Ringel (J. Comb. Theory B, 1976)

Equitable and proportional coloring of trees. - Béla Bollobás; Richard K. Guy (J. Comb. Theory B, 1983)

Aviezri Fraenkel and Combinatorial Games. - Richard K. Guy (Electron. J. Comb., 2001)

The Lighthouse Theorem, Morley & Malfatti: A Budget of Paradoxes. - Richard K. Guy (Am. Math. Mon., 2007)

Partitions with parts occurring at most thrice. - Alex Fink; Richard K. Guy; Mark Krusemeyer (Contributions Discret. Math., 2008)

Some Monoapparitic Fourth Order Linear Divisibility Sequences. - Hugh C. Williams; Richard K. Guy (Integers, 2012)

Some Extensions of the Lucas Functions. - Eric L. Roettger; Hugh C. Williams; Richard K. Guy (Number Theory and Related Fields, 2013)

Some primality tests that eluded Lucas. - Eric L. Roettger; Hugh C. Williams; Richard K. Guy (Des. Codes Cryptogr., 2015)

Odd and Even Linear Divisibility Sequences of Order 4. - Hugh C. Williams; Richard K. Guy (Integers, 2015)

The Outercoarseness of the n-cube. - Alex Fink; Richard K. Guy (Contributions Discret. Math., 2017)

Numerical and Statistical Analysis of Aliquot Sequences. - K. Chum; Richard K. Guy; Michael J. Jacobson Jr.; Anton Mosunov (Exp. Math., 2020)